Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs
===================================================================
diff -u -rbea6e87ff7f6b40ff9fcce4d46ccb55bb3b47535 -r0bb11ec189709c999bee440a31c003f00b0a3a2b
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs)	(revision bea6e87ff7f6b40ff9fcce4d46ccb55bb3b47535)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs)	(revision 0bb11ec189709c999bee440a31c003f00b0a3a2b)
@@ -104,6 +104,11 @@
 
                            foreach (var waterLevel in calculation.InputParameters.WaterLevels)
                            {
+                               if (State == ActivityState.Canceled)
+                               {
+                                   break;
+                               }
+
                                log.Info(string.Format(Resources.GrassCoverErosionOutwardsWaveConditionsCalculationActivity_OnRun_Subject_0_for_waterlevel_1_started_time_2_,
                                                       calculation.Name,
                                                       waterLevel,